// Copyright 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/strings/string_util.h"
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namespace base {
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// The following code is compatible with the OpenBSD lcpy interface. See:
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// http://www.gratisoft.us/todd/papers/strlcpy.html
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// ftp://ftp.openbsd.org/pub/OpenBSD/src/lib/libc/string/{wcs,str}lcpy.c
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namespace {
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template <typename CHAR>
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size_t lcpyT(CHAR* dst, const CHAR* src, size_t dst_size) {
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for (size_t i = 0; i < dst_size; ++i) {
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if ((dst[i] = src[i]) == 0) // We hit and copied the terminating NULL.
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return i;
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}
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// We were left off at dst_size. We over copied 1 byte. Null terminate.
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if (dst_size != 0)
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dst[dst_size - 1] = 0;
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// Count the rest of the |src|, and return it's length in characters.
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while (src[dst_size]) ++dst_size;
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return dst_size;
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}
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} // namespace
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size_t strlcpy(char* dst, const char* src, size_t dst_size) {
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return lcpyT<char>(dst, src, dst_size);
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}
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size_t wcslcpy(wchar_t* dst, const wchar_t* src, size_t dst_size) {
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return lcpyT<wchar_t>(dst, src, dst_size);
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}
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} // namespace base
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